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Product Detailed Parameters
- Description：IC SWITCH SP3T X 2 1OHM 12QFN
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Switch Circuit：SP3T
- Multiplexer/Demultiplexer Circuit：3:01
- On-State Resistance (Max)：1Ohm
- Channel-to-Channel Matching (ΔRon)：10mOhm
- Voltage - Supply, Single (V+)：1.65V ~ 4.3V
- Voltage - Supply, Dual (V±)：-
- Switch Time (Ton, Toff) (Max)：40ns, 20ns
- -3db Bandwidth：100MHz
- Charge Injection：55pC
- Channel Capacitance (CS(off), CD(off))：5pF
- Current - Leakage (IS(off)) (Max)：20nA
- Crosstalk：-84dB @ 100kHz
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：12-UFQFN
- Supplier Device Package：12-QFN (2.2x1.4)
- Number of Circuits：2
- Grade：-
- Qualification：-
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Overview
The STG3856QTR is a high-speed CMOS low voltage dual analog SP3T switch fabricated in silicon gate C2MOS technology. It operates from a single supply of 1.65 V to 4.3 V, making it suitable for portable applications. The device features very low ON resistance, with a maximum of 1.0 Ω at VCC = 4.3 V and 1.5 Ω at VCC = 3.0 V. It provides fast switching speeds with propagation delays of 0.3 ns typical at 3.0 V. Power consumption is ultra-low, with supply current max 0.2 μA at 85°C. Inputs and outputs include ESD protection exceeding 2 kV HBM. It is housed in a QFN-12 package.
Feature Summary
- Dual SP3T configuration enabling signal routing or multiplexing functions
- Low on-resistance characteristics optimized for minimal signal loss
- Integrated electrostatic discharge protection circuits on all pins
- Ultra-low power dissipation suitable for battery-operated devices
Applications
- Portable electronic equipment requiring signal path switching
- Battery-powered systems needing low quiescent current
- Multiplexer and demultiplexer implementations in data acquisition
Procurement Notes
Verify the NRND status indicating the component is not recommended for new designs. Confirm the QFN-12 package availability and check RoHS compliance details through official datasheets before integration into production schedules.
Selection Notes
Select this component when low voltage operation between 1.65 V and 4.3 V is required. Ensure the application benefits from the break-before-make feature and requires dual independent SP3T channels within a compact surface-mount footprint.
Part Context
This part belongs to the STG3856 series of analog switches. It shares the core architecture with variants differing in packaging or temperature grades, but specifically utilizes the QFN-12 form factor for space-constrained PCB layouts.
Replacement Considerations
Check for direct pin-compatible alternatives within the same family that may have updated lifecycle statuses. Verify electrical parameter equivalence if substituting with other dual SP3T switches from different manufacturers.
